From: Ian Lance Taylor <ian@airs.com>
Date: Fri, 13 Dec 1996 18:02:35 +0000 (+0000)
Subject: 	* config/tc-mips.c (md_begin): If configured for an embedded ELF
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=08e17202ee7afc8732505eecedffb77a86a30020;p=binutils-gdb.git

	* config/tc-mips.c (md_begin): If configured for an embedded ELF
	system, don't set the section alignment to 2**4.
	(s_change_sec): Likewise.
	(append_insn): Call record_alignment for the section.
	(md_section_align): Don't align the section size for an embedded
	ELF system.
---

diff --git a/gas/ChangeLog b/gas/ChangeLog
index ff724643d15..b9e78601a01 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,12 @@
+Fri Dec 13 13:00:33 1996  Ian Lance Taylor  <ian@cygnus.com>
+
+	* config/tc-mips.c (md_begin): If configured for an embedded ELF
+	system, don't set the section alignment to 2**4.
+	(s_change_sec): Likewise.
+	(append_insn): Call record_alignment for the section.
+	(md_section_align): Don't align the section size for an embedded
+	ELF system.
+
 Thu Dec 12 16:40:47 1996  Ian Lance Taylor  <ian@cygnus.com>
 
 	* write.c (adjust_reloc_syms): Make sure that symbols are
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 86dfc963775..4b1f0e65578 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -895,17 +895,23 @@ md_begin ()
   mips_cprmask[3] = 0;
 
   /* set the default alignment for the text section (2**2) */
-  record_alignment (text_section, 2);
+  if (OUTPUT_FLAVOR != bfd_target_elf_flavour)
+    record_alignment (text_section, 2);
 
   if (USE_GLOBAL_POINTER_OPT)
     bfd_set_gp_size (stdoutput, g_switch_value);
 
   if (OUTPUT_FLAVOR == bfd_target_elf_flavour)
     {
-      /* Sections must be aligned to 16 byte boundaries.  */
-      (void) bfd_set_section_alignment (stdoutput, text_section, 4);
-      (void) bfd_set_section_alignment (stdoutput, data_section, 4);
-      (void) bfd_set_section_alignment (stdoutput, bss_section, 4);
+      /* On a native system, sections must be aligned to 16 byte
+	 boundaries.  When configured for an embedded ELF target, we
+	 don't bother.  */
+      if (strcmp (TARGET_OS, "elf") != 0)
+	{
+	  (void) bfd_set_section_alignment (stdoutput, text_section, 4);
+	  (void) bfd_set_section_alignment (stdoutput, data_section, 4);
+	  (void) bfd_set_section_alignment (stdoutput, bss_section, 4);
+	}
 
       /* Create a .reginfo section for register masks and a .mdebug
 	 section for debugging information.  */
@@ -1148,6 +1154,17 @@ append_insn (place, ip, address_expr, reloc_type, unmatched_hi)
   fixS *fixp;
   int nops = 0;
 
+  /* Make sure the section will be aligned appropriately.  Note that
+     we do not insert an alignment directive; it remains the user's
+     responsibility to align instructions if necessary.  Here we only
+     ensure that the section will have the right default alignment, so
+     that the right thing will happen if no alignment directive is
+     used.  */
+  if (mips16)
+    record_alignment (now_seg, 1);
+  else
+    record_alignment (now_seg, 2);
+
   prev_pinfo = prev_insn.insn_mo->pinfo;
   pinfo = ip->insn_mo->pinfo;
 
@@ -1374,7 +1391,12 @@ append_insn (place, ip, address_expr, reloc_type, unmatched_hi)
   else if (place != NULL)
     f = place;
   else if (mips16 && ! ip->use_extend && reloc_type != BFD_RELOC_MIPS16_JMP)
-    f = frag_more (2);
+    {
+      /* Make sure there is enough room to swap this instruction with
+         a following jump instruction.  */
+      frag_grow (6);
+      f = frag_more (2);
+    }
   else
     f = frag_more (4);
   fixp = NULL;
@@ -8466,7 +8488,8 @@ s_change_sec (sec)
 				      | SEC_READONLY
 				      | SEC_RELOC
 				      | SEC_DATA));
-	      bfd_set_section_alignment (stdoutput, seg, 4);
+	      if (strcmp (TARGET_OS, "elf") != 0)
+		bfd_set_section_alignment (stdoutput, seg, 4);
 	    }
 	  demand_empty_rest_of_line ();
 	}
@@ -8487,7 +8510,8 @@ s_change_sec (sec)
 	      bfd_set_section_flags (stdoutput, seg,
 				     SEC_ALLOC | SEC_LOAD | SEC_RELOC
 				     | SEC_DATA);
-	      bfd_set_section_alignment (stdoutput, seg, 4);
+	      if (strcmp (TARGET_OS, "elf") != 0)
+		bfd_set_section_alignment (stdoutput, seg, 4);
 	    }
 	  demand_empty_rest_of_line ();
 	  break;
@@ -8943,7 +8967,10 @@ md_section_align (seg, addr)
 #ifdef OBJ_ELF
   /* We don't need to align ELF sections to the full alignment.
      However, Irix 5 may prefer that we align them at least to a 16
-     byte boundary.  */
+     byte boundary.  We don't bother to align the sections if we are
+     targeted for an embedded system.  */
+  if (strcmp (TARGET_OS, "elf") == 0)
+    return addr;
   if (align > 4)
     align = 4;
 #endif